Chemical Constituents from the Roots,Stems and Leaves of Diplomorpha sikokiana

Abstract

Four diarylpentanoids (1–4), two phenylpropanoids (5–6), three biflavonoids (7–9), two lignans (10–11) and a coumarin (12) were isolated from the roots of Diplomorpha sikokiana (Franchet & Savatier) Honda (Family: Thymelaeaceae). Similarly, two phenylpropanoids (5–6), five biflavonoids (7–9, 13, 14), three lignans (11, 15, 16), a flavonoid (17) and two coumarins (12, 18) were isolated from the stems, and five flavonoids (17, 19–22) from the leaves. Among them, 1,5-diphenyl-1-pentanone (1), 1,5-diphenyl-2-penten-1-one (2), 3(S)-hydroxy-1,5-diphenylpentane (3), stelleranol (8), (-)-syringaresinol (10), (-)-pinoresinol 4,4′-di-O-β-D-glucopyranoside (11), apiosylskimmin (12), syringaresinol 4-O-β-D-glucopyranoside (16), quercetin 3-O-α-L-rhamnopyranoside (19), kaempferol 3-O-α- L-rhamnopyranoside (20) and tiliroside (21) were isolated for the first time from D. sikokiana.